Add spaces between sentences in formatted docs.

Increases readability when using `ansible-doc`.
Replace all occurrences of "Digital Ocean" with "DigitalOcean"
WIP on fact caching docs.
Rename some INI keys for fact caching defaults
Merge pull request #7462 from chamill/devel

Add spaces between sentences in formatted docs.
Fixing broken patch 20957a1

Also adds integration tests for nested includes with conditionals
ansible-vault view - new command
Fix comments and error message
Keep things alphabetical in vault option list.
Update CHANGELOG
Merge pull request #8525 from kamaln7/patch-1

Replace all occurrences of "Digital Ocean" with "DigitalOcean"
Copy recursion works when source is a parameter, there is no parameter 'recurse' here.
Add vault-keyring.py example script that can be used with --vault-password-file